Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 768
IM(diag)-7
Immobilizer Control Module I/O Signal
IMMOBILIZER (DIAGNOSTICS)
4. Immobilizer Control Module
I/O Signal
A: WIRING DIAGRAM
1. IMMOBILIZER
IM(diag)-8
Subaru Select Monitor
IMMOBILIZER (DIAGNOSTICS)
5. Subaru Select Monitor
A: OPERATION
1. HOW TO USE THE SUBARU SELECT
MONITOR
1) Prepare the Subaru Select Monitor kit.
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector is located in the lower
portion of the instrument panel (on the driver’s
side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect scan tools other than the Suba-
ru Select Monitor.
4) Turn the ignition switch to ON and start the Sub-
aru Select Monitor.
5) Using the Subaru Select Monitor, call up DTCs
and various data, then record them.
2. READ DIAGNOSTIC TROUBLE CODE
(DTC) FOR ENGINE AND BODY INTEGRAT-
ED UNIT
Refer to “Read Diagnostic Trouble Code” for infor-
mation about how to indicate DTC. <Ref. to IM(di-
ag)-9, Read Diagnostic Trouble Code (DTC).>
3. COMMUNICATION LINE CHECK
NOTE:
The communication line between ECM and body
integrated unit can be checked in “System Opera-
tion Check Mode”. This is referred to as “Commu-
nication line check”.
1) Connect the Subaru Select Monitor.
2) On «Main Menu» display, select {Each System
Check}.
3) On «System Selection Menu» display, select
{Engine Control System}.
4) Select [OK] after the information of engine type
is displayed.
5) On «Engine Diagnosis» display, select {System
Operation Check Mode}.
6) On «System Operation Check Mode» display,
select {Immobilizer System}.
7) Start the communication line check.
8) Is «OK» displayed on screen?
If displayed, go to step 9).
If not, go to step 10).
9) After diagnostic results, it is determined that the
circuit is not shorted. Finish the communication line
check.
10) If a problem is detected, repair the trouble
cause. <Ref. to IM(diag)-18, DTC B1572 IMM CIR-
CUIT FAILURE (EXCEPT ANTENNA CIRCUIT),
Diagnostic Procedure with Diagnostic Trouble
IM-00275
IM(diag)-9
Read Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
6. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
1. ECM
1) On «Main Menu» display, select {Each System
Check}.
2) On «System Selection Menu» display, select
{Engine Control System}.
3) Select [OK] after the information of engine type
is displayed.
4) On «Engine Diagnosis» display, select {Diag-
nostic Code(s) Display}.
5) On «Diagnostic Code(s) Display» display, select
{Current DTC} or {Past DTC}.
NOTE:
• For detailed operation procedures, refer to “PC
application help for Subaru Select Monitor”.
• For detailed concerning DTC, refer to the List of
Diagnostic Trouble Codes (DTC). <Ref. to IM(di-
ag)-14, LIST, List of Diagnostic Trouble Code
2. BODY INTEGRATED UNIT
1) On «Main Menu» display, select {Each System
Check}.
2) On «System Selection Menu» display, select {In-
teg. Unit}.
3) After {Integ. unit} is displayed, select [OK].
4) On «Integ. unit mode failure diag» display, select
{Diagnostic Code(s) Display}.
NOTE:
• For detailed operation procedures, refer to “PC
application help for Subaru Select Monitor”.
• For detailed concerning DTC, refer to the List of
Diagnostic Trouble Codes (DTC). <Ref. to IM(di-
IM(diag)-10
Clear Memory Mode
IMMOBILIZER (DIAGNOSTICS)
7. Clear Memory Mode
A: OPERATION
1. ECM
1) On «Main Menu» display, select {Each System
Check}.
2) On «System Selection Menu» display, select
{Engine Control System}.
3) Select [OK] after the information of engine type
is displayed.
4) On «Engine Diagnosis» display, select {Clear
Memory}.
5) When “Done” is displayed on the display, end
the Subaru Select Monitor and turn the ignition
switch to OFF.
NOTE:
• After the memory is cleared, initial diagnosis of
the electronic throttle control is performed. Wait for
10 seconds or more after turning the ignition switch
to ON, and then start the engine.
• For detailed operation procedures, refer to “PC
application help for Subaru Select Monitor”.
2. BODY INTEGRATED UNIT
1) On «Main Menu» display, select {Each System
Check}.
2) On «System Selection Menu» display, select {In-
teg. Unit}.
3) After {Integ. unit} is displayed, select [OK].
4) On «Integ. unit mode» display, select {Clear
Memory}.
5) When “Done” is displayed on the display, end
the Subaru Select Monitor and turn the ignition
switch to OFF.
NOTE:
For detailed operation procedures, refer to “PC ap-
plication help for Subaru Select Monitor”.
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